80540544 has 192 divisors, whose sum is σ = 261152640. Its totient is φ = 21537792.

The previous prime is 80540533. The next prime is 80540561. The reversal of 80540544 is 44504508.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 970327 + ... + 970409.

It is an arithmetic number, because the mean of its divisors is an integer number (1360170).

Almost surely, 2^80540544 is an apocalyptic number.

80540544 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80540544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130576320).

80540544 is an abundant number, since it is smaller than the sum of its proper divisors (180612096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80540544 is a wasteful number, since it uses less digits than its factorization.

80540544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 80540544 is about 8974.4383668283. The cubic root of 80540544 is about 431.8552326997.

The spelling of 80540544 in words is "eighty million, five hundred forty thousand, five hundred forty-four".